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author | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2023-08-18 18:48:39 +0000 |
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committer | giraffedata <giraffedata@9d0c8265-081b-0410-96cb-a4ca84ce46f8> | 2023-08-18 18:48:39 +0000 |
commit | d6a74432bb099479d4ffe11f76ba84755b341ca3 (patch) | |
tree | 5822fc29de622cfddda898b7ea3c21c79c100699 /editor/ppmfade | |
parent | 58188f6e9e8f6e2dd0eb0f5577d97a858b3f0738 (diff) | |
download | netpbm-mirror-d6a74432bb099479d4ffe11f76ba84755b341ca3.tar.gz netpbm-mirror-d6a74432bb099479d4ffe11f76ba84755b341ca3.tar.xz netpbm-mirror-d6a74432bb099479d4ffe11f76ba84755b341ca3.zip |
improve error message for invalid option
git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@4595 9d0c8265-081b-0410-96cb-a4ca84ce46f8
Diffstat (limited to 'editor/ppmfade')
-rwxr-xr-x | editor/ppmfade | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/editor/ppmfade b/editor/ppmfade index 4b320ae7..7896eb87 100755 --- a/editor/ppmfade +++ b/editor/ppmfade @@ -93,7 +93,10 @@ sub commandLineArgs() { $mode = 'MIX'; } else { if (substr($arg, 0, 1) eq '-') { - print STDERR ("Unknown option '$arg'\n"); + print STDERR ("Unknown option '$arg'. " . + "We understand -f, -l, -base, " . + "-spread, -shift, -relief, -oil, -edge, " . + "-bentley, -block, and -mix\n"); } else { print STDERR ("There are no non-option arguments possible. " . "You specified '$arg'\n"); |